Ensure rustfmt and clippy are available in CI

Author: mhatzl

.github/workflows/main.yml

@@ -37,9 +37,6 @@ jobs:
 
     steps:
       - uses: actions/checkout@v7
-      - uses: dtolnay/rust-toolchain@1.90.0
-        with:
-          components: llvm-tools
       - uses: taiki-e/install-action@nextest
       - uses: taiki-e/install-action@just
       - uses: taiki-e/install-action@grcov

rust-toolchain.toml

@@ -1,3 +1,3 @@
 [toolchain]
 channel = "1.90"
-components = ["llvm-tools"]
+components = ["clippy", "llvm-tools", "rustfmt"]